The next day, Haru was in the maintenance tent room, as usual, giving the CAD that he had maintenance to the athletes that he needed to take care of. He looked at Miyuki and asked, "How is it?"

"...It's good." Miyuki had a complicated expression at that moment. Usually, her CAD was being maintained by her brother, but this time, it was being maintained by Haru, but rather than feeling uncomfortable, she felt that it was several times better.

"How does it compare to your brother?" Haru asked with a smile.

"....." Miyuki stared at Haru for a while before snorting since she knew that this guy was teasing her away.

"Well, I won't tease you anymore. Just do your best on the match later, alright?" Haru said calmly.

Miyuki looked at Haru with a complicated expression, but regardless, she nodded. "Um, you don't need to worry. I won't show a shameful display at today's event."

Haru looked at Miyuki, and somehow he had to admit that this girl resembled Maya. "Say, Miyuki, can I ask you something?"

"Hmm?" Miyuki looked at Haru, wondering what kind of question he wanted to ask.

"I'm just curious what makes you fall in love with your brother. Have you done it?" Haru asked curiously.

"Wh - What are you talking about?!" Miyuki's face was so red, and she raised her voice so high. She even caused the temperature in her surroundings to become colder since she lost control for a moment.

"I guess not, huh?" Haru nodded after he looked at Miyuki's reaction.

"...Haru, that's sexual harassment, you know," Miyuki said while looking at Haru with sharp eyes.

"I have never forced you to talk. If you don't want to, then you don't need to," Haru said calmly and didn't seem unfazed by Miyuki's gaze.

Both of them stared at each other for a while before Miyuki sighed and said, "I owe my life to him, and all I have and all I belong to him alone." When she thought about that incident that happened a few years ago, she knew that she should be dead right now, but she was saved, and it was all because of her brother. She owed him her life, this time. It was her to repay him by staying by his side all the time, even though all the people in this world were his enemy.

Haru raised his eyebrow and said, "Miyuki, that's wrong."

"Huh?" Miyuki was dumbfounded, but then she frowned and asked, "What do you mean?"

"What I mean is, from ancient times, it is an older brother's task to protect their little sister, so what he is doing is a normal thing, and isn't it obvious for both little sister and older brother to support each other?" Haru said with a smile.

"......." Miyuki felt complex, and somehow she understood why her aunt fell for him. Even though Haru might be quite manipulative, he was still very gentle, especially toward the people that he cared about.

Haru looked at Miyuki and knew how the people in this world were very reserved toward sex, but if they wanted to do it, it wasn't impossible. "Just be careful if you have children in the future. You two are real blood-related siblings. After all, something can happen if you have children."

"Wh - What are you talking about?!" Miyuki's face was so red at this moment, and she wanted to give a kick to this pervert, but the door of the room was opened.

"Good morning" Eimi entered the room in a cheerful mood, greeting both Haru and Miyuki.

It was still early in the morning, even though Haru and Miyuki had come very early, Eimi also came very early too, considering it was still after dawn.

Haru then took out Eimi's CAD and gave it to her. "Check it out first."

"Um." Eimi nodded and took the CAD, checking it with amazement and a smile on her face.

"How does it feel?" Haru asked.

"Perfect!" Eimi smiled sweetly.

Haru looked at Eimi for a while and extended his hand. "You weren't able to sleep yesterday, right? I will do a little tuning."

"Eh?" Eimi was startled and asked, "Y - You can see it?"

"You don't want to lose due to the lack of sleep, right? I will make the feedback of the CAD stronger, so please bear with it," Haru said.

Eimi clapped her hand and said desperately. "I will! I'm leaving this to you!" She then started to act funnily with a blush on her face. "If - If I lose to something like this, they will make me into their toy..."

"......." Haru looked at Miyuki silently.

"......." Miyuki.

When Eimi left to sleep for a bit, Haru asked, "You swing to a girl?"

"I'm not!" Miyuki was really mad at that moment.

---

The event started, and Haru watched both the Crowd Ball and the Ice Pillar Break since the athletes that he took care of did two events.

When Haru watched the Crowd Ball event, he was speechless when he saw how Airi, the girl that he had met last night, massacred everyone easily with her magic.

'Lightning...'

Airi seemed to be able to perceive Haru's gaze and looked at him smugly.

'This girl...' Haru was lost for words.

"Haru, do you know that girl?" Mayumi asked with a frown.

"Um, we met last night," Haru said.

"......." Mari, Suzune, and Mayumi.

"Well, it seems a bit hard for our athletes to win the Crowd Battle, but I'm sure the result of the Ice Pillar Break will surprise us," Haru said.

"Let's talk about the Ice Pillar Break later. Can you tell us how you met that girl?" Suzune asked.

"......"

---

On the Ice Pillar Break, Eimi and Shizuku won their match easily with the CAD that had been tuned by Haru. Both of them showed a happy smile when they won the match, but at this event, both of them weren't the main characters, especially when Miyuki came out to the stage.

When Miyuki came out to the stage, her appearance stunned everyone, wearing a shrine maiden outfit, her appearance was so graceful that it stunned everyone for a moment.

Haru looked at Miyuki and wondered whether Maya would wear a similar outfit later.

However, when everyone was stunned by Miyuki's graceful appearance, her magic was even more stunning. The moment she used her magic, she covered her area with an arctic chill and the enemy's area with blazing steam.

"That's..."

"It can't be..."

Mayumi and Mari were dumbfounded when they saw Miyuki use this magic.

"Inferno," Haru said simply.

"You told her to use this magic, Haru?" Mayumi asked with a complicated expression since this wasn't magic that could be used by a normal magician, right?

"No, that is her request. She can use this magic and it is her request, so all I need to do is to follow her request, right?" Haru said with a smile.

Inferno is medium-scale magic that works by dividing the target area into two sections and decreasing the kinetic and rotational energy of all objects within one section and this surplus energy can then be released into the other section in the form of heat. This way, the conservation of energy is still maintained while applying the principle of reverse entropy from thermodynamics.

Occasionally, this magic serves as a test for A-Rank Magicians, but due to its difficulty, many are unable to accomplish the employment of this magic.

Miyuki could use this magic easily, showing how scary her control over magic was.

Then the result of the battle was already inevitable and Miyuki won the match with an overwhelming victory.

<End of the match!>

Haru thought both of Miyuki and Tatsuya and thought that both siblings were the main protagonist of this world, right?

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